A727 Rebuild kits redux - Rebuild kits everywhere (62-70 vs 71+)

zijmer said

iam wondering about the lube hole you drilled for the sprag? what purpose does it serve if you just end up covering it up with the outer cam and spring retainer? shouldent it be drilled more inboared so it would spray at the inner race and the rollers?

Click to expand...

Hi zijmer,

I got the idea from reading the "Torqueflite A-727, Transmission Handbook" written by Carl H. Munroe (ISBN: 978-1-55788-399-5). In the book Carl states that "a small hole can be drilled into the the case in the return passage from the cooler to provide more oil for the roller clutch and cams" (Aka. Sprag). Carl explains the hole should be 1/8" in Dia. and 3/4" from the inside edge of the case bore.

I though since I just installed a new bolt in unit and I had the case open why not add additional lubrication to the roller clutch :)

AlV